Wire-chain-making machine



Sept 25 1923.

A.BERG

WIRE CHAIN MAKING MACHINE Filed Feb. 4. 1922 4 Sheets-Sheet 1 5 ATTORNEY,

fiept 25 1923 A. BERG WIRE CHAIN MAKING MACHINE Filed Feb. 4., 1922 4Sheets-Sheet s IN VEN TOR.

ATTORNEY.

Patented Sept. 25, 1923.

.. ANDREW BERG, oree rnerroer,ooriiqirerroer, essrenoero THE GOU TFR &

- raczenzrnrreerrme eoirrerrr, or eerperlrorzr, oorrnrerreo'r. A

WIRE-ermmmrerrrm reeeerrlrei I i Y APi l ice To all whom-2'25 may 00mm.-

Be it known that I, ANDREW Zen of the UhitecllStates, resirlingetBridgeport, in the county of Fairfielcl' enclState of Connecticut, haveinvented certain new and useful lim'noveriients in l ire Chein-liiakingMachines-E end 'I'clo hereby'gleolare. the following to'be a full,Clear, anrl'exeot description of the invention, suclifeswilleneblelothers skilled in the'h rt t tains to make' ancl us'e the se e- 2 PTlllS invention relates to" chain mgk rnachines, and particularlyeclzrptecl for.

making anclfinterlocking' short 'l1nks,'be1np; 1

an in;provernent "on former; bateii tf cletecl December l2, l922, Nor1,438,4-7. In the present. 'construction I employ tWo "p;trt

former or mend1 1-,:9ne pert beingstationary and. the other "pert ate,the link being formed about the two,

the mandrel is' seperateckgwhile the, link carrying jaws are tilted; tostrip -the'new mandrel removed; '1

2 r, e Figure {4 is it broke'nyiew ofthe upper surface of the machinebed, detail ol'eh yiwof the'link forming mandrel, encl ts reelp eatinggamer, end'broken View, ofthe eotuqatirig levers :onneoted therewithFigure ,5 is ebroken View of the machine bed. detail View of the link,formingma-nclrel end its carrier its elevated position,

broken View of the upper stetionery men- 'clrel, broken 'View' ofthe-loam for eetueting ;theiearrier, and broken Vi w of the lever for'eotuating the wire gripping'lei er. h

Figure 6 is a broken View of the machine e citi-.

parts when closecl togethenenpl when a link 18 formeo,

"Figure 3 is eneie aeoe. of the in'aehine looking in theclirection ofarrow b of Fig hon of short links.

tion fliedFebru r 4, .1522 Serial Nb; 534,027.

he'd, broken View of the upper statioilary mandrel, detail viewof them0veb1e. mentreated position e is are enlarged broken vlew, of the seeral elements connected uuth thehnk en .eclvaiieecl' section of the feedure 8 an enlarged broken Viousl'y formed link in position to [receiyethe link in process offorn ing, the'u'pper half of the mandrel not'shownFigure-'9 is an enlarged View of thelink olosersin their eclvahcerlposition engaging link," broken view of. one ofthe linkclosefr slides,and broken vlew of-thewire'g'ripping lever, y the upper half of themantlrel, not

Figure 10 is an enlarged broken View of broken View of the upper endlower parts ofthe mzrnclrel showirigthe jaws engaging a recently formedllnk;

the link carrying jaws and-arbor for seme,l

the link carrying jaws, 'brokenfi'fi'eW of their arbor, and

is a central sectional View of the ported fraine rarrVihg the arbor,broken View of" the arbor,

A, e angl broken view ofthe. "segment lever for rotating; the arbor, and

Figure 14 is a .cl et afil view-0r a oha in'sec rl Shaft jour alecl thehangers/l, FigureQ the berlancl carrying the' dr iy+ insg pulleyh. Thepinion 6,011 said; shiift meshes with the lergeqreer l on the Cain 1representsthe machine bed, is the shaft 8,. Figure 1, journele'cl .inthebea-rings 9,10. and Here oem shafts journziled re-- sbeetikr lfyinkbeerings projecting frornvthe lbecl' othree of hioh,l3, lk 'end150111 being shown. "from shaft Sby Tl1ehafts 10 11; are driventhe bevelgears 16,17, 18,

or open position, the wire 72, Figure 7, is advanced against the stop78, and the wire gripping lever 51 is then advanced to engage its block53 with the projecting end 72 of the wire and hold the same firmlyagainst the closed mandrels 42, 43, Figures 1 and 5. The arbor 22 isadvanced to place the previously formed link A, within the jawsQO,against the closed mandrels, Figure 8, when the bending tools 66, 67 areadvanced to give the initial bend to the link, the former severing alink section as it passes across the inner end of the bushing 70.

While the tools 51, 66, 67, arein the position shown in Figure 8, theslides 80, 81, Figure 9, are inwardly advanced and the levers 76, 77.are tilted by the contact of their curved edges 76*, 77*, with the rolls92, 93, to bring the link closers in position to engage the projectingends 0, (Z, of the partially formed link and close such ends within thepreviously formed link A while the said slides are. moving inwardly.

As soon as a link has been closed in the manner above described, thetools 51, 66, 77, will retreat, Figures 6 and 7, and the jaw carryingarbor will retreat to disengage the jaws from the newly formed link Band make a quarter turn and also be given an upward tilt by means of thecam 94, Figure 1, and again advanced to grasp the link B, Figure 10.When the jaws are thus engaged, the lower half 43 of the mandrel willretreat. Figure 11, and the jaw carrying arbor will be given a downwardtilt to strip the link B from the upper half 42 of the mandrel. When thelink B has been cleared from the upper half of the mandrel, the arbor 22will retreat with said link and reverse the previous quarter ,turn whilethe mandrel is closing and the tools 51, 66, 67, are again advanced intooperative position for forming a new link, when the aw carrying arborwill advance to place the link, within the jaws. against the former tocontinue the operation of chain making.

While the machine, above described, is canable of making links of anydesired length, t is particularly adapted to make very short l nks. Inother words. links wherein the diameters of the wire of two interlockinglinks practically fill the central opening of a companion link, as shownin Figure 14. Where there is plenty of spare room in this centralopening, the new link is usually closed at the center of said opening,but with short links. asshown' in Figure 14, the new link must be closedaway from the center and at such a distance therefrom as will give thetwo interlocking links B and C the necessary freedom. It is for thispurpose that the jaw carrying arbor is vertically tilted in order tocarry a recently closed link from a higher plane to a lower one wherethe link interlocking can be done at one side of the center of apreviously formed link.

Having thus described my invention what I claim is 1. A wire chainmaking machine comprising a two part mandrel having seats at theadjacent ends of the two parts about which the jaws and at one side ofthe center of said closedlink.

2. Awire chain making machine comprising an arbor, a support therefor,means for oscillating and longitudinally reciprocating said arbor in itssupport, means for reciprocally tilting said support, a two partmandrel, means for separating and closing the mandrel, reciprocatinginitial link bending tools, reciprocating link closing tools forinterlocking a partially formed link within a previously formed linkheld by the jaws and at one side of the center of said previously formedlink, said arbor retreated as said links are interlocked so as torelease the jaws from the previously formed link, and partially rotateand advance to engage the jaws with the newly formed link and detachsaid link from the two part mandrel, and again retreat and reverse itsprevious partial rotation and advance the newly formed link to theclosed mandrel.

3. In a chain making machine of the character described, comprising atwo part mandrel, one part held stationary and the other part movable toand from the stationary part, the adjacent ends of the two parts havingseats about which links are formed when the mandrel is closed, initiallink bending tools, link closing tools, a jaw carrying arbor, means foractuating said arbor to detach a closed link from the stationary part ofthe mandrel and present it to the closed mandrel for the interlocking ofa new link at one side of the previously formed link held by the jaws.

4. In a chain making machine of the char- V 'pivotally supportedthereon, link closing tools mounted on the levers, and means for tiltingsaid levers toward the mandrel.

In testimony whereof I aflix my signature.

ANDREW BERG.

